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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 | /* SPDX-License-Identifier: GPL-2.0-only */ /****************************************************************************** * * Copyright(c) 2009 - 2014 Intel Corporation. All rights reserved. * Copyright(C) 2016 Intel Deutschland GmbH * Copyright(c) 2018, 2023 Intel Corporation *****************************************************************************/ #ifndef __IWLWIFI_DEVICE_TRACE #define __IWLWIFI_DEVICE_TRACE #include <linux/skbuff.h> #include <linux/ieee80211.h> #include <net/cfg80211.h> #include <net/mac80211.h> #include "iwl-trans.h" static inline bool iwl_trace_data(struct sk_buff *skb) { struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); struct ieee80211_hdr *hdr = (void *)skb->data; __le16 fc = hdr->frame_control; int offs = 24; /* start with normal header length */ if (!ieee80211_is_data(fc)) return false; /* If upper layers wanted TX status it's an important frame */ if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS) return false; /* Try to determine if the frame is EAPOL. This might have false * positives (if there's no RFC 1042 header and we compare to some * payload instead) but since we're only doing tracing that's not * a problem. */ if (ieee80211_has_a4(fc)) offs += 6; if (ieee80211_is_data_qos(fc)) offs += 2; /* don't account for crypto - these are unencrypted */ /* also account for the RFC 1042 header, of course */ offs += 6; return skb->len <= offs + 2 || *(__be16 *)(skb->data + offs) != cpu_to_be16(ETH_P_PAE); } static inline size_t iwl_rx_trace_len(const struct iwl_trans *trans, void *rxbuf, size_t len, size_t *out_hdr_offset) { struct iwl_cmd_header *cmd = (void *)((u8 *)rxbuf + sizeof(__le32)); struct ieee80211_hdr *hdr = NULL; size_t hdr_offset; if (cmd->cmd != trans->rx_mpdu_cmd) return len; hdr_offset = sizeof(struct iwl_cmd_header) + trans->rx_mpdu_cmd_hdr_size; if (out_hdr_offset) *out_hdr_offset = hdr_offset; hdr = (void *)((u8 *)cmd + hdr_offset); if (!ieee80211_is_data(hdr->frame_control)) return len; /* maybe try to identify EAPOL frames? */ return sizeof(__le32) + sizeof(*cmd) + trans->rx_mpdu_cmd_hdr_size + ieee80211_hdrlen(hdr->frame_control); } #include <linux/tracepoint.h> #include <linux/device.h> #if !defined(CONFIG_IWLWIFI_DEVICE_TRACING) || defined(__CHECKER__) #undef TRACE_EVENT #define TRACE_EVENT(name, proto, ...) \ static inline void trace_ ## name(proto) {} #undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(...) #undef DEFINE_EVENT #define DEFINE_EVENT(evt_class, name, proto, ...) \ static inline void trace_ ## name(proto) {} #endif #define DEV_ENTRY __string(dev, dev_name(dev)) #define DEV_ASSIGN __assign_str(dev, dev_name(dev)) #include "iwl-devtrace-io.h" #include "iwl-devtrace-ucode.h" #include "iwl-devtrace-msg.h" #include "iwl-devtrace-data.h" #include "iwl-devtrace-iwlwifi.h" #ifdef CONFIG_IWLWIFI_DEVICE_TRACING DECLARE_TRACEPOINT(iwlwifi_dev_rx); DECLARE_TRACEPOINT(iwlwifi_dev_rx_data); #endif void __trace_iwlwifi_dev_rx(struct iwl_trans *trans, void *pkt, size_t len); static inline void maybe_trace_iwlwifi_dev_rx(struct iwl_trans *trans, void *pkt, size_t len) { #ifdef CONFIG_IWLWIFI_DEVICE_TRACING if (tracepoint_enabled(iwlwifi_dev_rx) || tracepoint_enabled(iwlwifi_dev_rx_data)) __trace_iwlwifi_dev_rx(trans, pkt, len); #endif } #endif /* __IWLWIFI_DEVICE_TRACE */ |